Getting a new job or a big promotion is like building a house: You need to get the foundation right for both. With a job, the quick-drying cement is how well you do in your first hundred days, since they establish the foundation for long-term momentum and great performance. Tom Neff and Jim Citrin are two of the world's leading experts on leadership and career success. As key figures at Spencer Stuart (hailed by the Wall Street Journal as the number one brand name in executive search), they must understand the criteria for success when they recruit top executives for new leadership positions.